./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/id_build.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/id_build.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c4c8975bee6324b0c0486aa99ba8be369d6762a33e8dd5b012191d5fa43c106 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:01:13,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:01:13,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:01:13,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:01:13,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:01:13,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:01:13,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:01:13,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:01:13,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:01:13,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:01:13,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:01:13,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:01:13,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:01:13,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:01:13,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:01:13,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:01:13,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:01:13,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:01:13,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:01:13,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:01:13,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:01:13,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:01:13,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:01:13,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:01:13,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:01:13,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:01:13,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:01:13,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:01:13,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:01:13,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:01:13,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:01:13,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:01:13,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:01:13,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:01:13,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:01:13,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:01:13,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:01:13,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:01:13,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:01:13,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:01:13,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:01:13,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:01:13,538 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:01:13,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:01:13,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:01:13,539 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:01:13,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:01:13,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:01:13,541 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:01:13,542 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:01:13,542 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:01:13,542 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:01:13,543 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:01:13,543 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:01:13,543 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:01:13,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:01:13,544 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:01:13,544 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:01:13,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:01:13,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:01:13,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:01:13,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:01:13,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:01:13,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:01:13,546 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:01:13,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:01:13,547 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:01:13,547 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:01:13,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:01:13,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:01:13,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:01:13,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:01:13,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:01:13,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:01:13,550 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:01:13,550 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4c8975bee6324b0c0486aa99ba8be369d6762a33e8dd5b012191d5fa43c106 [2021-10-28 09:01:13,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:01:13,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:01:13,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:01:13,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:01:13,958 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:01:13,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/loop-invgen/id_build.i [2021-10-28 09:01:14,070 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/data/25143df57/c7d22009b7e1404894816c6d7c54592e/FLAG30440a667 [2021-10-28 09:01:14,634 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:01:14,635 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/sv-benchmarks/c/loop-invgen/id_build.i [2021-10-28 09:01:14,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/data/25143df57/c7d22009b7e1404894816c6d7c54592e/FLAG30440a667 [2021-10-28 09:01:14,959 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/data/25143df57/c7d22009b7e1404894816c6d7c54592e [2021-10-28 09:01:14,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:01:14,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:01:14,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:01:14,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:01:14,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:01:14,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:01:14" (1/1) ... [2021-10-28 09:01:14,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2905a2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:14, skipping insertion in model container [2021-10-28 09:01:14,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:01:14" (1/1) ... [2021-10-28 09:01:14,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:01:15,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:01:15,228 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/sv-benchmarks/c/loop-invgen/id_build.i[893,906] [2021-10-28 09:01:15,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:01:15,276 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:01:15,295 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/sv-benchmarks/c/loop-invgen/id_build.i[893,906] [2021-10-28 09:01:15,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:01:15,327 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:01:15,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:15 WrapperNode [2021-10-28 09:01:15,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:01:15,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:01:15,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:01:15,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:01:15,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:15" (1/1) ... [2021-10-28 09:01:15,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:15" (1/1) ... [2021-10-28 09:01:15,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:01:15,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:01:15,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:01:15,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:01:15,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:15" (1/1) ... [2021-10-28 09:01:15,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:15" (1/1) ... [2021-10-28 09:01:15,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:15" (1/1) ... [2021-10-28 09:01:15,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:15" (1/1) ... [2021-10-28 09:01:15,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:15" (1/1) ... [2021-10-28 09:01:15,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:15" (1/1) ... [2021-10-28 09:01:15,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:15" (1/1) ... [2021-10-28 09:01:15,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:01:15,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:01:15,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:01:15,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:01:15,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:15" (1/1) ... [2021-10-28 09:01:15,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:15,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:15,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:15,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:01:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:01:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:01:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:01:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:01:15,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:01:15,790 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 09:01:15,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:01:15 BoogieIcfgContainer [2021-10-28 09:01:15,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:01:15,794 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:01:15,794 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:01:15,798 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:01:15,800 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:01:15,800 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:01:14" (1/3) ... [2021-10-28 09:01:15,801 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c732619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:01:15, skipping insertion in model container [2021-10-28 09:01:15,802 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:01:15,802 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:01:15" (2/3) ... [2021-10-28 09:01:15,803 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c732619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:01:15, skipping insertion in model container [2021-10-28 09:01:15,803 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:01:15,803 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:01:15" (3/3) ... [2021-10-28 09:01:15,805 INFO L389 chiAutomizerObserver]: Analyzing ICFG id_build.i [2021-10-28 09:01:15,862 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:01:15,863 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:01:15,863 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:01:15,863 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:01:15,863 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:01:15,863 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:01:15,864 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:01:15,864 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:01:15,881 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:15,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 09:01:15,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:01:15,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:01:15,913 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:01:15,914 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:01:15,914 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:01:15,915 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:15,917 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 09:01:15,918 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:01:15,918 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:01:15,919 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:01:15,919 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 09:01:15,928 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 9#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 15#L27-3true [2021-10-28 09:01:15,929 INFO L793 eck$LassoCheckResult]: Loop: 15#L27-3true assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 8#L28-2true assume !(main_~j~0 < 8); 11#L27-2true main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 15#L27-3true [2021-10-28 09:01:15,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:15,945 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 09:01:15,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:15,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022646729] [2021-10-28 09:01:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:15,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:16,108 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:16,180 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:16,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash 39940, now seen corresponding path program 1 times [2021-10-28 09:01:16,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:16,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598981576] [2021-10-28 09:01:16,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:16,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:16,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:01:16,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598981576] [2021-10-28 09:01:16,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598981576] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:01:16,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:01:16,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:01:16,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406005580] [2021-10-28 09:01:16,340 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:01:16,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:01:16,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:01:16,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:01:16,381 INFO L87 Difference]: Start difference. First operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:16,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:01:16,431 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-28 09:01:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:01:16,444 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 23 transitions. [2021-10-28 09:01:16,446 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 09:01:16,451 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 14 states and 15 transitions. [2021-10-28 09:01:16,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-28 09:01:16,455 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-28 09:01:16,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 15 transitions. [2021-10-28 09:01:16,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:01:16,458 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-28 09:01:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 15 transitions. [2021-10-28 09:01:16,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2021-10-28 09:01:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-28 09:01:16,494 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-28 09:01:16,494 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-28 09:01:16,495 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:01:16,495 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2021-10-28 09:01:16,497 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 09:01:16,498 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:01:16,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:01:16,499 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:01:16,500 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:01:16,500 INFO L791 eck$LassoCheckResult]: Stem: 48#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 49#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 53#L27-3 [2021-10-28 09:01:16,501 INFO L793 eck$LassoCheckResult]: Loop: 53#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 54#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 46#L18 assume !(0 == __VERIFIER_assert_~cond); 47#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 50#L18-3 assume !(0 == __VERIFIER_assert_~cond); 51#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 52#L28-2 assume !(main_~j~0 < 8); 55#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 53#L27-3 [2021-10-28 09:01:16,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:16,505 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-10-28 09:01:16,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:16,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852032510] [2021-10-28 09:01:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:16,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:16,536 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:16,556 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:16,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2021355157, now seen corresponding path program 1 times [2021-10-28 09:01:16,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:16,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966414751] [2021-10-28 09:01:16,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:16,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:16,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:01:16,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966414751] [2021-10-28 09:01:16,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966414751] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:16,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096322707] [2021-10-28 09:01:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:16,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:01:16,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:16,621 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:01:16,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:01:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:16,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:01:16,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:16,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096322707] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:16,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:01:16,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-28 09:01:16,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114632726] [2021-10-28 09:01:16,804 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:01:16,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:01:16,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:01:16,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:01:16,806 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:16,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:01:16,830 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 09:01:16,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:01:16,831 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2021-10-28 09:01:16,832 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-10-28 09:01:16,833 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 20 transitions. [2021-10-28 09:01:16,834 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-10-28 09:01:16,834 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-10-28 09:01:16,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 20 transitions. [2021-10-28 09:01:16,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:01:16,835 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-28 09:01:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 20 transitions. [2021-10-28 09:01:16,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-10-28 09:01:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-28 09:01:16,838 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-28 09:01:16,838 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-28 09:01:16,838 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:01:16,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions. [2021-10-28 09:01:16,839 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-28 09:01:16,840 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:01:16,840 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:01:16,840 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:01:16,841 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 2, 1, 1, 1] [2021-10-28 09:01:16,841 INFO L791 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 106#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 111#L27-3 [2021-10-28 09:01:16,841 INFO L793 eck$LassoCheckResult]: Loop: 111#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 112#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 117#L18 assume !(0 == __VERIFIER_assert_~cond); 116#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 115#L18-3 assume !(0 == __VERIFIER_assert_~cond); 107#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 108#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 103#L18 assume !(0 == __VERIFIER_assert_~cond); 104#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 109#L18-3 assume !(0 == __VERIFIER_assert_~cond); 110#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 114#L28-2 assume !(main_~j~0 < 8); 113#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 111#L27-3 [2021-10-28 09:01:16,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:16,842 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-10-28 09:01:16,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:16,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873323578] [2021-10-28 09:01:16,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:16,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:16,856 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:16,872 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:16,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:16,873 INFO L85 PathProgramCache]: Analyzing trace with hash -51059612, now seen corresponding path program 2 times [2021-10-28 09:01:16,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:16,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990011548] [2021-10-28 09:01:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:16,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:16,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:01:16,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990011548] [2021-10-28 09:01:16,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990011548] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:16,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383446142] [2021-10-28 09:01:16,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:01:16,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:01:16,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:16,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:01:17,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:01:17,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:01:17,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:01:17,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:01:17,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:17,125 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:17,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383446142] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:17,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:01:17,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-28 09:01:17,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683304533] [2021-10-28 09:01:17,126 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:01:17,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:01:17,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:01:17,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:01:17,128 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. cyclomatic complexity: 2 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:17,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:01:17,152 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-28 09:01:17,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:01:17,153 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 25 transitions. [2021-10-28 09:01:17,154 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2021-10-28 09:01:17,155 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 25 transitions. [2021-10-28 09:01:17,155 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-28 09:01:17,156 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-28 09:01:17,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 25 transitions. [2021-10-28 09:01:17,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:01:17,156 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-28 09:01:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 25 transitions. [2021-10-28 09:01:17,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2021-10-28 09:01:17,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.05) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:17,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-10-28 09:01:17,160 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-28 09:01:17,160 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-28 09:01:17,160 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:01:17,161 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 21 transitions. [2021-10-28 09:01:17,162 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-10-28 09:01:17,162 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:01:17,162 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:01:17,163 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:01:17,163 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 3, 3, 1, 1, 1] [2021-10-28 09:01:17,163 INFO L791 eck$LassoCheckResult]: Stem: 188#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 189#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 194#L27-3 [2021-10-28 09:01:17,163 INFO L793 eck$LassoCheckResult]: Loop: 194#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 195#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 205#L18 assume !(0 == __VERIFIER_assert_~cond); 204#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 203#L18-3 assume !(0 == __VERIFIER_assert_~cond); 191#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 192#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 186#L18 assume !(0 == __VERIFIER_assert_~cond); 187#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 190#L18-3 assume !(0 == __VERIFIER_assert_~cond); 193#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 202#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 198#L18 assume !(0 == __VERIFIER_assert_~cond); 201#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 200#L18-3 assume !(0 == __VERIFIER_assert_~cond); 199#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 197#L28-2 assume !(main_~j~0 < 8); 196#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 194#L27-3 [2021-10-28 09:01:17,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:17,164 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-10-28 09:01:17,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:17,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221937146] [2021-10-28 09:01:17,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:17,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:17,190 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:17,212 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:17,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:17,213 INFO L85 PathProgramCache]: Analyzing trace with hash 63866123, now seen corresponding path program 3 times [2021-10-28 09:01:17,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:17,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892440172] [2021-10-28 09:01:17,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:17,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:17,343 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:17,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:01:17,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892440172] [2021-10-28 09:01:17,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892440172] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:17,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609020234] [2021-10-28 09:01:17,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:01:17,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:01:17,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:17,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:01:17,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:01:17,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 09:01:17,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:01:17,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:01:17,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:17,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609020234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:17,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:01:17,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-28 09:01:17,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973529008] [2021-10-28 09:01:17,590 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:01:17,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:01:17,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:01:17,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:01:17,593 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:01:17,635 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-10-28 09:01:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:01:17,636 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 30 transitions. [2021-10-28 09:01:17,640 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2021-10-28 09:01:17,642 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 29 states and 30 transitions. [2021-10-28 09:01:17,642 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-28 09:01:17,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-28 09:01:17,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 30 transitions. [2021-10-28 09:01:17,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:01:17,644 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-28 09:01:17,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 30 transitions. [2021-10-28 09:01:17,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-10-28 09:01:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.04) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-10-28 09:01:17,654 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-28 09:01:17,655 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-28 09:01:17,655 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:01:17,655 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 26 transitions. [2021-10-28 09:01:17,659 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-10-28 09:01:17,659 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:01:17,660 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:01:17,661 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:01:17,661 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 4, 4, 4, 1, 1, 1] [2021-10-28 09:01:17,662 INFO L791 eck$LassoCheckResult]: Stem: 297#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 298#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 303#L27-3 [2021-10-28 09:01:17,662 INFO L793 eck$LassoCheckResult]: Loop: 303#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 304#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 319#L18 assume !(0 == __VERIFIER_assert_~cond); 318#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 317#L18-3 assume !(0 == __VERIFIER_assert_~cond); 300#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 301#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 295#L18 assume !(0 == __VERIFIER_assert_~cond); 296#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 299#L18-3 assume !(0 == __VERIFIER_assert_~cond); 302#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 316#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 315#L18 assume !(0 == __VERIFIER_assert_~cond); 314#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 313#L18-3 assume !(0 == __VERIFIER_assert_~cond); 312#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 311#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 307#L18 assume !(0 == __VERIFIER_assert_~cond); 310#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 309#L18-3 assume !(0 == __VERIFIER_assert_~cond); 308#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 306#L28-2 assume !(main_~j~0 < 8); 305#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 303#L27-3 [2021-10-28 09:01:17,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:17,663 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-10-28 09:01:17,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:17,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168447430] [2021-10-28 09:01:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:17,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:17,699 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:17,718 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:17,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2131610428, now seen corresponding path program 4 times [2021-10-28 09:01:17,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:17,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374620211] [2021-10-28 09:01:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:17,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:17,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:01:17,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374620211] [2021-10-28 09:01:17,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374620211] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:17,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125821529] [2021-10-28 09:01:17,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:01:17,813 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:01:17,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:17,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:01:17,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:01:17,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:01:17,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:01:17,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:01:17,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:18,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125821529] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:18,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:01:18,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 09:01:18,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576366159] [2021-10-28 09:01:18,084 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:01:18,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:01:18,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:01:18,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:01:18,092 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. cyclomatic complexity: 2 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:18,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:01:18,126 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-10-28 09:01:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:01:18,127 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 35 transitions. [2021-10-28 09:01:18,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2021-10-28 09:01:18,132 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 35 transitions. [2021-10-28 09:01:18,133 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-10-28 09:01:18,134 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-10-28 09:01:18,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 35 transitions. [2021-10-28 09:01:18,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:01:18,135 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-10-28 09:01:18,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 35 transitions. [2021-10-28 09:01:18,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2021-10-28 09:01:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:18,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-10-28 09:01:18,143 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-28 09:01:18,143 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-28 09:01:18,143 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 09:01:18,144 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 31 transitions. [2021-10-28 09:01:18,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-10-28 09:01:18,150 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:01:18,150 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:01:18,151 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:01:18,151 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 5, 5, 5, 1, 1, 1] [2021-10-28 09:01:18,152 INFO L791 eck$LassoCheckResult]: Stem: 432#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 433#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 438#L27-3 [2021-10-28 09:01:18,152 INFO L793 eck$LassoCheckResult]: Loop: 438#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 439#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 459#L18 assume !(0 == __VERIFIER_assert_~cond); 458#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 457#L18-3 assume !(0 == __VERIFIER_assert_~cond); 435#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 436#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 430#L18 assume !(0 == __VERIFIER_assert_~cond); 431#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 434#L18-3 assume !(0 == __VERIFIER_assert_~cond); 437#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 456#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 455#L18 assume !(0 == __VERIFIER_assert_~cond); 454#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 453#L18-3 assume !(0 == __VERIFIER_assert_~cond); 452#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 451#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 450#L18 assume !(0 == __VERIFIER_assert_~cond); 449#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 448#L18-3 assume !(0 == __VERIFIER_assert_~cond); 447#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 446#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 442#L18 assume !(0 == __VERIFIER_assert_~cond); 445#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 444#L18-3 assume !(0 == __VERIFIER_assert_~cond); 443#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 441#L28-2 assume !(main_~j~0 < 8); 440#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 438#L27-3 [2021-10-28 09:01:18,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:18,153 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-10-28 09:01:18,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:18,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764317157] [2021-10-28 09:01:18,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:18,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:18,167 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:18,198 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:18,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:18,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1653313365, now seen corresponding path program 5 times [2021-10-28 09:01:18,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:18,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120173529] [2021-10-28 09:01:18,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:18,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:18,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:01:18,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120173529] [2021-10-28 09:01:18,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120173529] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:18,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57360748] [2021-10-28 09:01:18,351 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:01:18,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:01:18,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:18,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:01:18,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:01:18,473 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-28 09:01:18,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:01:18,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:01:18,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:18,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57360748] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:18,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:01:18,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 09:01:18,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83326709] [2021-10-28 09:01:18,602 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:01:18,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:01:18,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:01:18,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:01:18,604 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. cyclomatic complexity: 2 Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:01:18,643 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-10-28 09:01:18,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:01:18,643 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 40 transitions. [2021-10-28 09:01:18,644 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-28 09:01:18,645 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 39 states and 40 transitions. [2021-10-28 09:01:18,646 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-28 09:01:18,646 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2021-10-28 09:01:18,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 40 transitions. [2021-10-28 09:01:18,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:01:18,647 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-10-28 09:01:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 40 transitions. [2021-10-28 09:01:18,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-10-28 09:01:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:18,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-10-28 09:01:18,651 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-10-28 09:01:18,651 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-10-28 09:01:18,651 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 09:01:18,652 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 36 transitions. [2021-10-28 09:01:18,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-10-28 09:01:18,653 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:01:18,653 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:01:18,654 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:01:18,654 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 6, 6, 6, 6, 1, 1, 1] [2021-10-28 09:01:18,654 INFO L791 eck$LassoCheckResult]: Stem: 593#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 594#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 599#L27-3 [2021-10-28 09:01:18,654 INFO L793 eck$LassoCheckResult]: Loop: 599#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 600#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 625#L18 assume !(0 == __VERIFIER_assert_~cond); 624#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 623#L18-3 assume !(0 == __VERIFIER_assert_~cond); 596#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 597#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 591#L18 assume !(0 == __VERIFIER_assert_~cond); 592#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 595#L18-3 assume !(0 == __VERIFIER_assert_~cond); 598#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 622#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 621#L18 assume !(0 == __VERIFIER_assert_~cond); 620#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 619#L18-3 assume !(0 == __VERIFIER_assert_~cond); 618#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 617#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 616#L18 assume !(0 == __VERIFIER_assert_~cond); 615#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 614#L18-3 assume !(0 == __VERIFIER_assert_~cond); 613#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 612#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 611#L18 assume !(0 == __VERIFIER_assert_~cond); 610#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 609#L18-3 assume !(0 == __VERIFIER_assert_~cond); 608#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 607#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 603#L18 assume !(0 == __VERIFIER_assert_~cond); 606#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 605#L18-3 assume !(0 == __VERIFIER_assert_~cond); 604#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 602#L28-2 assume !(main_~j~0 < 8); 601#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 599#L27-3 [2021-10-28 09:01:18,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2021-10-28 09:01:18,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:18,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304219912] [2021-10-28 09:01:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:18,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:18,665 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:18,674 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:18,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:18,675 INFO L85 PathProgramCache]: Analyzing trace with hash 978226468, now seen corresponding path program 6 times [2021-10-28 09:01:18,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:18,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91157127] [2021-10-28 09:01:18,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:18,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:18,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:01:18,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91157127] [2021-10-28 09:01:18,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91157127] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:18,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003725662] [2021-10-28 09:01:18,782 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:01:18,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:01:18,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:18,788 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:01:18,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:01:18,901 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-28 09:01:18,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:01:18,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:01:18,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:19,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003725662] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:19,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:01:19,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-28 09:01:19,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447650262] [2021-10-28 09:01:19,071 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:01:19,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:01:19,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:01:19,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:01:19,072 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. cyclomatic complexity: 2 Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:19,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:01:19,108 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-10-28 09:01:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:01:19,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 45 transitions. [2021-10-28 09:01:19,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2021-10-28 09:01:19,111 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 44 states and 45 transitions. [2021-10-28 09:01:19,111 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-10-28 09:01:19,111 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-10-28 09:01:19,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 45 transitions. [2021-10-28 09:01:19,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:01:19,112 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-10-28 09:01:19,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 45 transitions. [2021-10-28 09:01:19,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-10-28 09:01:19,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.025) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:19,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-10-28 09:01:19,116 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-10-28 09:01:19,116 INFO L587 BuchiCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-10-28 09:01:19,117 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 09:01:19,117 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 41 transitions. [2021-10-28 09:01:19,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2021-10-28 09:01:19,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:01:19,118 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:01:19,119 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:01:19,119 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 7, 7, 7, 7, 1, 1, 1] [2021-10-28 09:01:19,119 INFO L791 eck$LassoCheckResult]: Stem: 780#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 781#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 786#L27-3 [2021-10-28 09:01:19,119 INFO L793 eck$LassoCheckResult]: Loop: 786#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 787#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 817#L18 assume !(0 == __VERIFIER_assert_~cond); 816#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 815#L18-3 assume !(0 == __VERIFIER_assert_~cond); 783#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 784#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 778#L18 assume !(0 == __VERIFIER_assert_~cond); 779#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 782#L18-3 assume !(0 == __VERIFIER_assert_~cond); 785#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 814#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 813#L18 assume !(0 == __VERIFIER_assert_~cond); 812#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 811#L18-3 assume !(0 == __VERIFIER_assert_~cond); 810#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 809#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 808#L18 assume !(0 == __VERIFIER_assert_~cond); 807#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 806#L18-3 assume !(0 == __VERIFIER_assert_~cond); 805#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 804#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 803#L18 assume !(0 == __VERIFIER_assert_~cond); 802#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 801#L18-3 assume !(0 == __VERIFIER_assert_~cond); 800#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 799#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 798#L18 assume !(0 == __VERIFIER_assert_~cond); 797#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 796#L18-3 assume !(0 == __VERIFIER_assert_~cond); 795#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 794#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 790#L18 assume !(0 == __VERIFIER_assert_~cond); 793#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 792#L18-3 assume !(0 == __VERIFIER_assert_~cond); 791#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 789#L28-2 assume !(main_~j~0 < 8); 788#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 786#L27-3 [2021-10-28 09:01:19,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2021-10-28 09:01:19,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:19,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407833194] [2021-10-28 09:01:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:19,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:19,146 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:19,165 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:19,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:19,166 INFO L85 PathProgramCache]: Analyzing trace with hash 736121931, now seen corresponding path program 7 times [2021-10-28 09:01:19,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:19,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337195149] [2021-10-28 09:01:19,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:19,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:19,322 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:19,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:01:19,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337195149] [2021-10-28 09:01:19,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337195149] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:19,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896039172] [2021-10-28 09:01:19,324 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:01:19,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:01:19,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:19,327 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:01:19,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:01:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:19,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:01:19,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:19,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896039172] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:01:19,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:01:19,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-28 09:01:19,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79093315] [2021-10-28 09:01:19,635 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:01:19,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:01:19,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:01:19,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:01:19,637 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. cyclomatic complexity: 2 Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:01:19,696 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2021-10-28 09:01:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:01:19,697 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 46 transitions. [2021-10-28 09:01:19,698 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-10-28 09:01:19,698 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 46 transitions. [2021-10-28 09:01:19,699 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-28 09:01:19,699 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-28 09:01:19,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 46 transitions. [2021-10-28 09:01:19,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:01:19,699 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-28 09:01:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 46 transitions. [2021-10-28 09:01:19,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-28 09:01:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-10-28 09:01:19,703 INFO L704 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-28 09:01:19,704 INFO L587 BuchiCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-28 09:01:19,704 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 09:01:19,704 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 46 transitions. [2021-10-28 09:01:19,705 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-10-28 09:01:19,705 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:01:19,705 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:01:19,706 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:01:19,706 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 8, 8, 8, 8, 1, 1, 1] [2021-10-28 09:01:19,706 INFO L791 eck$LassoCheckResult]: Stem: 989#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 990#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 995#L27-3 [2021-10-28 09:01:19,706 INFO L793 eck$LassoCheckResult]: Loop: 995#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 996#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1031#L18 assume !(0 == __VERIFIER_assert_~cond); 1030#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1029#L18-3 assume !(0 == __VERIFIER_assert_~cond); 992#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 993#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 987#L18 assume !(0 == __VERIFIER_assert_~cond); 988#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 991#L18-3 assume !(0 == __VERIFIER_assert_~cond); 994#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1028#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1027#L18 assume !(0 == __VERIFIER_assert_~cond); 1026#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1025#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1024#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1023#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1022#L18 assume !(0 == __VERIFIER_assert_~cond); 1021#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1020#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1019#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1018#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1017#L18 assume !(0 == __VERIFIER_assert_~cond); 1016#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1015#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1014#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1013#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1012#L18 assume !(0 == __VERIFIER_assert_~cond); 1011#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1010#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1009#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1008#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1007#L18 assume !(0 == __VERIFIER_assert_~cond); 1006#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1005#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1004#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1003#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 999#L18 assume !(0 == __VERIFIER_assert_~cond); 1002#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1001#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1000#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 998#L28-2 assume !(main_~j~0 < 8); 997#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 995#L27-3 [2021-10-28 09:01:19,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2021-10-28 09:01:19,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:19,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855022639] [2021-10-28 09:01:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:19,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:19,716 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:19,723 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:19,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:19,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1675619716, now seen corresponding path program 8 times [2021-10-28 09:01:19,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:19,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961748981] [2021-10-28 09:01:19,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:19,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:19,740 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:19,762 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:19,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:19,763 INFO L85 PathProgramCache]: Analyzing trace with hash -532421502, now seen corresponding path program 1 times [2021-10-28 09:01:19,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:19,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149542490] [2021-10-28 09:01:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:19,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:19,808 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:19,856 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:20,637 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:01:20,638 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:01:20,638 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:01:20,638 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:01:20,638 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:01:20,639 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:20,639 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:01:20,639 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:01:20,639 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration9_Loop [2021-10-28 09:01:20,639 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:01:20,640 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:01:20,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:20,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:20,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:20,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:20,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:20,746 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:01:20,747 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:01:20,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:20,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:20,756 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:20,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 09:01:20,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:01:20,764 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:01:20,796 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:01:20,796 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:01:20,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:20,828 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:20,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:20,829 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:20,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 09:01:20,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:01:20,831 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:01:20,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-28 09:01:20,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:20,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:20,883 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:20,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 09:01:20,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:01:20,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:01:21,004 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:01:21,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:21,017 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:01:21,017 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:01:21,017 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:01:21,018 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:01:21,018 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:01:21,018 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:21,018 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:01:21,018 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:01:21,018 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration9_Loop [2021-10-28 09:01:21,018 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:01:21,018 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:01:21,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:21,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:21,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:21,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:21,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:21,119 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:01:21,125 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:01:21,126 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:21,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:21,129 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:21,142 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:01:21,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 09:01:21,164 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:01:21,164 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:01:21,165 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:01:21,165 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:01:21,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:01:21,168 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:01:21,168 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:01:21,179 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:01:21,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:21,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:21,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:21,234 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:21,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 09:01:21,243 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:01:21,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:01:21,253 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:01:21,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:01:21,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:01:21,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:01:21,255 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:01:21,255 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:01:21,257 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:01:21,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-10-28 09:01:21,287 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:21,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:21,288 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:21,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 09:01:21,297 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:01:21,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:01:21,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:01:21,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:01:21,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:01:21,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:01:21,308 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:01:21,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:01:21,311 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:01:21,319 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-28 09:01:21,319 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 09:01:21,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:21,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:21,333 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:21,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 09:01:21,341 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:01:21,341 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:01:21,342 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:01:21,342 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~nlen~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~nlen~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 09:01:21,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:21,370 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:01:21,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:21,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:01:21,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:21,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:01:21,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:21,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-10-28 09:01:21,901 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:01:21,902 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 46 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:21,947 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 46 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 88 states and 91 transitions. Complement of second has 4 states. [2021-10-28 09:01:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 09:01:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-10-28 09:01:21,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 2 letters. Loop has 43 letters. [2021-10-28 09:01:21,953 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:01:21,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 45 letters. Loop has 43 letters. [2021-10-28 09:01:21,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:01:21,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 2 letters. Loop has 86 letters. [2021-10-28 09:01:21,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:01:21,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 91 transitions. [2021-10-28 09:01:21,958 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:01:21,960 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 87 states and 90 transitions. [2021-10-28 09:01:21,960 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2021-10-28 09:01:21,960 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-10-28 09:01:21,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 90 transitions. [2021-10-28 09:01:21,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:01:21,961 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 90 transitions. [2021-10-28 09:01:21,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 90 transitions. [2021-10-28 09:01:21,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 51. [2021-10-28 09:01:21,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:21,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2021-10-28 09:01:21,967 INFO L704 BuchiCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-10-28 09:01:21,967 INFO L587 BuchiCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-10-28 09:01:21,967 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 09:01:21,967 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 54 transitions. [2021-10-28 09:01:21,968 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:01:21,968 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:01:21,968 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:01:21,968 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 09:01:21,968 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 09:01:21,969 INFO L791 eck$LassoCheckResult]: Stem: 1279#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 1280#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 1289#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 1285#L28-2 [2021-10-28 09:01:21,969 INFO L793 eck$LassoCheckResult]: Loop: 1285#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1275#L18 assume !(0 == __VERIFIER_assert_~cond); 1276#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1281#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1284#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1285#L28-2 [2021-10-28 09:01:21,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:21,969 INFO L85 PathProgramCache]: Analyzing trace with hash 29863, now seen corresponding path program 1 times [2021-10-28 09:01:21,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:21,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849471903] [2021-10-28 09:01:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:21,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:21,979 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:21,988 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:21,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:21,989 INFO L85 PathProgramCache]: Analyzing trace with hash 46025336, now seen corresponding path program 1 times [2021-10-28 09:01:21,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:21,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836971801] [2021-10-28 09:01:21,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:21,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:21,996 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:22,003 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:22,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:22,004 INFO L85 PathProgramCache]: Analyzing trace with hash 271240594, now seen corresponding path program 1 times [2021-10-28 09:01:22,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:22,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255220848] [2021-10-28 09:01:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:22,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:22,014 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:22,024 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:22,109 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:01:22,109 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:01:22,109 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:01:22,110 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:01:22,110 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:01:22,110 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:22,110 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:01:22,110 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:01:22,110 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration10_Loop [2021-10-28 09:01:22,110 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:01:22,110 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:01:22,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:22,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:22,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:22,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:22,191 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:01:22,191 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:01:22,191 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:22,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:22,193 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:22,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 09:01:22,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:01:22,202 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:01:22,225 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:01:22,225 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Honda state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:01:22,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:22,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:22,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:22,273 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:22,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:01:22,281 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:01:22,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 09:01:22,303 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:01:22,303 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:01:22,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:22,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:22,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:22,353 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:22,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:01:22,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:01:22,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 09:01:22,381 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:01:22,381 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:01:22,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:22,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:22,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:22,429 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:22,437 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:01:22,438 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:01:22,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 09:01:22,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:22,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:22,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:22,512 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:22,526 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:01:22,527 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:01:22,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 09:01:22,604 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:01:22,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:22,614 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:01:22,614 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:01:22,614 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:01:22,615 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:01:22,615 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:01:22,615 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:22,615 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:01:22,615 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:01:22,615 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration10_Loop [2021-10-28 09:01:22,615 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:01:22,615 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:01:22,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:22,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:22,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:22,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:22,689 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:01:22,689 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:01:22,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:22,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:22,691 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:22,701 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:01:22,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:01:22,713 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:01:22,713 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:01:22,713 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:01:22,713 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:01:22,714 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:01:22,715 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:01:22,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 09:01:22,731 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:01:22,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:22,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:22,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:22,780 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:22,788 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:01:22,799 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:01:22,800 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:01:22,800 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:01:22,800 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:01:22,800 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:01:22,801 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:01:22,801 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:01:22,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-28 09:01:22,812 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:01:22,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:22,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:22,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:22,861 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:22,868 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:01:22,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 09:01:22,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:01:22,880 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:01:22,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:01:22,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:01:22,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:01:22,882 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:01:22,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:01:22,892 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:01:22,895 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:01:22,895 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:01:22,896 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:22,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:22,897 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:22,905 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:01:22,905 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:01:22,905 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:01:22,905 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 15 Supporting invariants [] [2021-10-28 09:01:22,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 09:01:22,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:22,955 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:01:22,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:22,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:01:22,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:22,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:01:22,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:23,050 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:01:23,051 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 54 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:23,080 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 54 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 138 states and 145 transitions. Complement of second has 7 states. [2021-10-28 09:01:23,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:01:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:23,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-28 09:01:23,083 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 5 letters. [2021-10-28 09:01:23,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:01:23,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 5 letters. [2021-10-28 09:01:23,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:01:23,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 10 letters. [2021-10-28 09:01:23,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:01:23,085 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 145 transitions. [2021-10-28 09:01:23,090 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:01:23,095 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 94 states and 98 transitions. [2021-10-28 09:01:23,095 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-28 09:01:23,096 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-28 09:01:23,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 98 transitions. [2021-10-28 09:01:23,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:01:23,101 INFO L681 BuchiCegarLoop]: Abstraction has 94 states and 98 transitions. [2021-10-28 09:01:23,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 98 transitions. [2021-10-28 09:01:23,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 51. [2021-10-28 09:01:23,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2021-10-28 09:01:23,113 INFO L704 BuchiCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-10-28 09:01:23,113 INFO L587 BuchiCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-10-28 09:01:23,113 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-28 09:01:23,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 53 transitions. [2021-10-28 09:01:23,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 09:01:23,114 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:01:23,114 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:01:23,116 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 8, 8, 8, 8, 2, 1, 1, 1, 1] [2021-10-28 09:01:23,116 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-10-28 09:01:23,116 INFO L791 eck$LassoCheckResult]: Stem: 1516#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 1517#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post5, main_#t~post4, main_~offset~0, main_~length~0, main_~nlen~0, main_~i~0, main_~j~0;havoc main_~offset~0;havoc main_~length~0;main_~nlen~0 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~i~0;havoc main_~j~0;main_~i~0 := 0; 1525#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 1526#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1562#L18 assume !(0 == __VERIFIER_assert_~cond); 1561#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1560#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1520#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1521#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1514#L18 assume !(0 == __VERIFIER_assert_~cond); 1515#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1523#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1524#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1559#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1558#L18 assume !(0 == __VERIFIER_assert_~cond); 1557#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1556#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1555#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1554#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1553#L18 assume !(0 == __VERIFIER_assert_~cond); 1552#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1551#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1550#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1549#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1548#L18 assume !(0 == __VERIFIER_assert_~cond); 1547#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1546#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1545#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1544#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1543#L18 assume !(0 == __VERIFIER_assert_~cond); 1542#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1541#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1540#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1539#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1538#L18 assume !(0 == __VERIFIER_assert_~cond); 1537#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1536#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1535#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1534#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1530#L18 assume !(0 == __VERIFIER_assert_~cond); 1533#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1532#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1531#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1529#L28-2 assume !(main_~j~0 < 8); 1528#L27-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1527#L27-3 assume !!(main_~i~0 < main_~nlen~0);main_~j~0 := 0; 1519#L28-2 [2021-10-28 09:01:23,116 INFO L793 eck$LassoCheckResult]: Loop: 1519#L28-2 assume !!(main_~j~0 < 8);__VERIFIER_assert_#in~cond := (if 0 <= main_~nlen~0 - 1 - main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1512#L18 assume !(0 == __VERIFIER_assert_~cond); 1513#L18-2 __VERIFIER_assert_#in~cond := (if main_~nlen~0 - 1 - main_~i~0 < main_~nlen~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1522#L18-3 assume !(0 == __VERIFIER_assert_~cond); 1518#L18-5 main_#t~post5 := main_~j~0;main_~j~0 := 1 + main_#t~post5;havoc main_#t~post5; 1519#L28-2 [2021-10-28 09:01:23,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:23,117 INFO L85 PathProgramCache]: Analyzing trace with hash 674802632, now seen corresponding path program 2 times [2021-10-28 09:01:23,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:23,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746256338] [2021-10-28 09:01:23,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:23,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:23,161 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:23,251 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:23,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:23,252 INFO L85 PathProgramCache]: Analyzing trace with hash 46025336, now seen corresponding path program 2 times [2021-10-28 09:01:23,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:23,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071598223] [2021-10-28 09:01:23,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:23,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:23,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:23,269 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:23,279 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:23,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:23,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1573708561, now seen corresponding path program 3 times [2021-10-28 09:01:23,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:01:23,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232110301] [2021-10-28 09:01:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:01:23,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:01:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:23,325 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:01:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:01:23,368 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:01:23,458 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:01:23,458 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:01:23,459 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:01:23,459 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:01:23,459 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:01:23,459 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:23,459 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:01:23,460 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:01:23,460 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration11_Loop [2021-10-28 09:01:23,460 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:01:23,460 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:01:23,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:23,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:23,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:23,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:23,531 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:01:23,531 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:01:23,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:23,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:23,533 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:23,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:01:23,546 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:01:23,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 09:01:23,581 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:01:23,582 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:01:23,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:23,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:23,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:23,633 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:23,641 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:01:23,641 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:01:23,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 09:01:23,668 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:01:23,669 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:01:23,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:23,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:23,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:23,715 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:23,721 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:01:23,722 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:01:23,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 09:01:23,757 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:01:23,757 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Honda state: {ULTIMATE.start_main_~i~0=0, ULTIMATE.start_main_~nlen~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:01:23,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:23,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:23,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:23,806 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:23,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:01:23,810 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:01:23,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 09:01:23,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:23,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:23,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:23,882 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:23,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:01:23,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:01:23,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 09:01:23,957 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:01:23,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:23,966 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:01:23,966 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:01:23,966 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:01:23,966 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:01:23,967 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:01:23,967 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:23,967 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:01:23,967 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:01:23,967 INFO L133 ssoRankerPreferences]: Filename of dumped script: id_build.i_Iteration11_Loop [2021-10-28 09:01:23,967 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:01:23,967 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:01:23,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:23,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:23,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:23,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:01:24,043 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:01:24,044 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:01:24,045 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:24,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:24,046 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:24,053 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:01:24,065 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:01:24,065 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:01:24,066 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:01:24,066 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:01:24,066 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:01:24,067 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:01:24,067 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:01:24,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 09:01:24,080 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:01:24,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:24,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:24,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:24,112 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:24,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 09:01:24,114 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:01:24,123 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:01:24,123 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:01:24,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:01:24,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:01:24,124 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:01:24,125 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:01:24,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:01:24,128 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:01:24,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-10-28 09:01:24,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:24,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:24,161 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:24,189 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:01:24,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 09:01:24,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:01:24,205 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:01:24,205 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:01:24,205 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:01:24,205 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:01:24,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:01:24,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:01:24,219 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:01:24,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-10-28 09:01:24,247 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:24,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:24,248 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:24,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 09:01:24,249 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:01:24,258 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:01:24,258 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:01:24,258 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:01:24,258 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:01:24,258 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:01:24,259 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:01:24,259 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:01:24,262 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:01:24,265 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 09:01:24,265 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:01:24,265 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:01:24,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:01:24,267 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:01:24,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-28 09:01:24,274 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:01:24,275 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:01:24,275 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:01:24,275 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 15 Supporting invariants [] [2021-10-28 09:01:24,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:24,302 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:01:24,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:24,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:01:24,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:24,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:01:24,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:24,555 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:01:24,555 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:24,584 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 128 states and 133 transitions. Complement of second has 7 states. [2021-10-28 09:01:24,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:01:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:24,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-28 09:01:24,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-28 09:01:24,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:01:24,589 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:01:24,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:24,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:01:24,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:24,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:01:24,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:24,876 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:01:24,876 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:24,909 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 128 states and 133 transitions. Complement of second has 7 states. [2021-10-28 09:01:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:01:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-28 09:01:24,912 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-28 09:01:24,912 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:01:24,912 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:01:24,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:24,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:01:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:24,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:01:24,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:01:25,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:01:25,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:01:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:01:25,173 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 09:01:25,174 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:25,192 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 53 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 90 states and 94 transitions. Complement of second has 6 states. [2021-10-28 09:01:25,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-28 09:01:25,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:01:25,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-28 09:01:25,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 46 letters. Loop has 5 letters. [2021-10-28 09:01:25,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:01:25,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 51 letters. Loop has 5 letters. [2021-10-28 09:01:25,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:01:25,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 46 letters. Loop has 10 letters. [2021-10-28 09:01:25,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:01:25,195 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 94 transitions. [2021-10-28 09:01:25,197 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:01:25,198 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 0 states and 0 transitions. [2021-10-28 09:01:25,198 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 09:01:25,198 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 09:01:25,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 09:01:25,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:01:25,198 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:01:25,199 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:01:25,199 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:01:25,199 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-28 09:01:25,199 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:01:25,199 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:01:25,199 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 09:01:25,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:01:25 BoogieIcfgContainer [2021-10-28 09:01:25,207 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:01:25,208 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:01:25,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:01:25,208 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:01:25,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:01:15" (3/4) ... [2021-10-28 09:01:25,215 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:01:25,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:01:25,218 INFO L168 Benchmark]: Toolchain (without parser) took 10251.49 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 68.1 MB in the beginning and 86.2 MB in the end (delta: -18.1 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:25,219 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 102.8 MB. Free memory was 77.2 MB in the beginning and 77.2 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:01:25,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.96 ms. Allocated memory is still 102.8 MB. Free memory was 67.7 MB in the beginning and 79.2 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:25,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.01 ms. Allocated memory is still 102.8 MB. Free memory was 79.2 MB in the beginning and 77.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:25,221 INFO L168 Benchmark]: Boogie Preprocessor took 52.88 ms. Allocated memory is still 102.8 MB. Free memory was 77.7 MB in the beginning and 77.1 MB in the end (delta: 595.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:01:25,221 INFO L168 Benchmark]: RCFGBuilder took 349.77 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 67.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:25,222 INFO L168 Benchmark]: BuchiAutomizer took 9413.16 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 67.2 MB in the beginning and 86.2 MB in the end (delta: -19.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:01:25,222 INFO L168 Benchmark]: Witness Printer took 7.93 ms. Allocated memory is still 148.9 MB. Free memory is still 86.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:01:25,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 102.8 MB. Free memory was 77.2 MB in the beginning and 77.2 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.96 ms. Allocated memory is still 102.8 MB. Free memory was 67.7 MB in the beginning and 79.2 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.01 ms. Allocated memory is still 102.8 MB. Free memory was 79.2 MB in the beginning and 77.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.88 ms. Allocated memory is still 102.8 MB. Free memory was 77.7 MB in the beginning and 77.1 MB in the end (delta: 595.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 349.77 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 67.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9413.16 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 67.2 MB in the beginning and 86.2 MB in the end (delta: -19.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 7.93 ms. Allocated memory is still 148.9 MB. Free memory is still 86.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (8 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function nlen + -1 * i and consists of 3 locations. One deterministic module has affine ranking function 15 + -2 * j and consists of 4 locations. One nondeterministic module has affine ranking function 15 + -2 * j and consists of 4 locations. 8 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.3s and 12 iterations. TraceHistogramMax:8. Analysis of lassos took 7.1s. Construction of modules took 0.2s. Büchi inclusion checks took 1.7s. Highest rank in rank-based complementation 3. Minimization of det autom 9. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 107 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 51 states and ocurred in iteration 9. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 148/148 HoareTripleCheckerStatistics: 115 SDtfs, 197 SDslu, 163 SDs, 0 SdLazy, 157 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI8 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital27 mio100 ax100 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq133 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 53ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 09:01:25,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:25,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:25,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:25,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:26,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:01:26,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-28 09:01:26,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-28 09:01:26,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26981df2-4fcb-4f63-b157-9a15c1b65409/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...